{"ast":null,"code":"import { millisecondsInWeek } from \"./constants.mjs\";\nimport { startOfISOWeek } from \"./startOfISOWeek.mjs\";\nimport { startOfISOWeekYear } from \"./startOfISOWeekYear.mjs\";\nimport { toDate } from \"./toDate.mjs\";\n\n/**\n * @name getISOWeek\n * @category ISO Week Helpers\n * @summary Get the ISO week of the given date.\n *\n * @description\n * Get the ISO week of the given date.\n *\n * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date\n *\n * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).\n *\n * @param date - The given date\n *\n * @returns The ISO week\n *\n * @example\n * // Which week of the ISO-week numbering year is 2 January 2005?\n * const result = getISOWeek(new Date(2005, 0, 2))\n * //=> 53\n */\nexport function getISOWeek(date) {\n  const _date = toDate(date);\n  const diff = +startOfISOWeek(_date) - +startOfISOWeekYear(_date);\n\n  // Round the number of weeks to the nearest integer because the number of\n  // milliseconds in a week is not constant (e.g. it's different in the week of\n  // the daylight saving time clock shift).\n  return Math.round(diff / millisecondsInWeek) + 1;\n}\n\n// Fallback for modularized imports:\nexport default getISOWeek;","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}